Journal
PHYSICAL REVIEW LETTERS
Volume 102, Issue 22, Pages -Publisher
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.222501
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Funding
- UK STFC
- EU [506065]
- Academy of Finland Centre of Excellence Programme 2006-2011
- STFC [EP/D075769/1, ST/F500648/1, ST/F012071/1, EP/D076439/1] Funding Source: UKRI
- Science and Technology Facilities Council [EP/D075769/1, ST/F500648/1, EP/D076439/1, ST/F012071/1] Funding Source: researchfish
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A new method of optical pumping in an ion beam cooler buncher has been developed to selectively enhance ionic metastable state populations. The technique permits the study of elements previously inaccessible to laser spectroscopy and has been applied here to the study of Nb. Model independent mean-square charge radii and nuclear moments have been studied for (90,90 m,91,91 m,92,93,99,101,103)Nb to cover the region of the N=50 shell closure and N approximate to 60 sudden onset of deformation. The increase in mean-square charge radius is observed to be less than that for Y, with a substantial degree of beta softness observed before and after N=60.
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